Who are Mr. D and Mr. O?

Mr. D and Mr. O are members of D.O. EXO. D.O. This is the stage name given by D.O. Company, which means: doing, learning, etc. , which means versatile, and DOkyungsoo is the real stage name, because D.O. is relatively simple, that is, DuDu is called D.O. Fans and the public because D.O has two points, and it is also called Mr. D.O. D-Point O-Point.